Biocides: Assessing the risks to bees from using biocides

This guidance provides technical advice on how to perform the hazard and exposure assessment and risk characterisation for biocidal active substances and biocidal products.

Applies to:
Great Britain – for applications submitted to HSE after 1 February 2027. Northern Ireland
Published by:
European Chemicals Agency (ECHA)
Published:
February 2024
Last updated:
No

Document

Details

HSE has adopted this ECHA guidance in Great Britain. The guidance applies to Great Britain applications submitted to HSE after 1 February 2027. This guidance already applies to new Northern Ireland applications.

The document describes how to perform a risk assessment for bees, in accordance with Article 19(1)(b)(iv) of the Biocidal Products Regulation (BPR).

It proposes a tiered approach scheme for the exposure estimation in different scenarios, hazard characterisation and a risk assessment methodology covering both dietary and contact exposure. It also provides recommendations for:

  • higher tier assessment
  • metabolite risk assessment
  • biocidal product risk assessment

The routes of exposure covered are:

  • application of manure or sludge from animal housing (for example from insecticide use in stables or manure storage systems)
  • spraying on walls and foundations of buildings
  • irrigation of private gardens with treated water (for example, where rainwater barrels are treated to control mosquitoes)
  • large scale spraying of trees, bushes or natural water bodies

The document refers to ‘Appendix B - Shortcut values for contact and dietary exposure’. You can download Appendix B from the ECHA website.

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Updated:2026-05-01